Retirement Plans

6 Months Ended

Mar. 31, 2020

Defined Benefit Plan [Abstract]

Retirement Plans

Retirement Plans

The components of net periodic benefit cost for our pension plans are presented below.

	Three months ended				Six months ended
	March 31,				March 31,
	2020		2019		2020		2019
	(in millions)
Service cost	$	0.4	$	0.4	$	0.8	$	0.8
Pension costs (benefits) other than service:
Interest cost	2.8		3.5		5.6		7.0
Expected return on plan assets	(4.2)		(4.0)		(8.4)		(8.1)
Amortization of actuarial net loss	0.6		0.5		1.3		1.0
Curtailment/special settlement loss (gain)	—		1.0		—		1.0
Pension costs (benefits) other than service	(0.8)		1.0		(1.5)		0.9
Net periodic (benefit) cost	$	(0.4)	$	1.4	$	(0.7)	$	1.7

The amortization of actuarial losses, net of tax, is recorded as a component of other comprehensive loss.

During the quarter ended March 31, 2019, we settled our obligation to our Canadian pension plan participants through a combination of lump sum payments and purchases of annuities. We made a contribution to the plans of $1.0 million, which is included in pension costs other than service, to fund these settlements.

Also during the quarter ended March 31, 2019, we recorded an estimated settlement liability for our exiting a multi-employer pension plan at one of our manufacturing locations, which resulted in an expense of $1.1 million that we included in strategic reorganization and other charges.